Abstract: Methods and systems for visualizing media trends at a content sharing platform are provided herein. A request of a client device is received for media items of a platform. A graphical user interface (GUI) including audiovisual content of one or more media items and an indication that the media items are associated with a media trend of the platform is provided for presentation on the client device. The media trend is associated with a set of media items, where content of the set of media items share common audiovisual characteristics in accordance with a concept of the media trend A user interaction with a GUI element associated with the media items is detected. Responsive to the detection, an additional GUI is provided for presentation on to the client device, the additional GUI including audiovisual content of a set of media items associated with the media trend.

Abstract: A core data-based storage method for radial multidimensional documents according to an embodiment includes classifying first documents with same document type information into a preset folder to obtain a classified folder; acquiring the total number of levels of document level information of all non-core documents; and displaying preset target images at core display positions and/or non-core display positions, and setting a corresponding storage link path for each of the displayed preset target images. The documents may be stored by classification and displayed visually.

Abstract: Provided is an anti-islanding protection system. The system is applied to a low-voltage distributed generation resource (DGR) and includes a box, a reverse power protector, a protection module and an output controller. The reverse power protector has an end connected to a first current transformer and has another end connected to the output controller. The reverse power protector is configured to provide reverse power protection for the low-voltage DGR. The output controller has an end connected to the protection module and the reverse power protector and has another end connected to a grid-connection switch of the low-voltage DGR. The output controller is configured to control the grid-connection switch to turn off when reserve power is detected. The protection module has an end connected to a second current transformer and has another end connected to the output controller.

Abstract: Provided is an anti-islanding protection system. The system is applied to a low-voltage distributed generation resource (DGR) and includes a box, a reverse power protector, a protection module and an output controller. The reverse power protector has an end connected to a first current transformer and has another end connected to the output controller. The reverse power protector is configured to provide reverse power protection for the low-voltage DGR. The output controller has an end connected to the protection module and the reverse power protector and has another end connected to a grid-connection switch of the low-voltage DGR. The output controller is configured to control the grid-connection switch to turn off when reserve power is detected. The protection module has an end connected to a second current transformer and has another end connected to the output controller.

Abstract: A phase-error compensation method and device, comprising: utilizing a phase-shifting-profilometry measuring system to obtain fringe sequence charts; based on Hilbert transform, transforming the fringe sequence charts from a space domain to a Hilbert transform domain; based on least squares phase shift method, solving the phases of the fringe sequence charts in the space domain and the Hilbert transform domain respectively, and obtaining a phase chart in the space domain and a phase chart in the Hilbert transform domain; averaging the phase chart in the space domain and the phase chart in the Hilbert transform domain to obtain an average phase, and utilizing the average phase to perform phase-error compensation. The invention possesses a self-compensation mechanism, does not need any auxiliary condition, and thus meets the requirements of high-speed, high-precision and high-universality 3D digital imaging and measuring based on the phase shifting profilometry.